Pull networking fixes from David Miller:
1) Use 32-bit index for tails calls in s390 bpf JIT, from Ilya
Leoshkevich.
2) Fix missed EPOLLOUT events in TCP, from Eric Dumazet. Same fix for
SMC from Jason Baron.
3) ipv6_mc_may_pull() should return 0 for malformed packets, not
-EINVAL. From Stefano Brivio.
4) Don't forget to unpin umem xdp pages in error path of
xdp_umem_reg(). From Ivan Khoronzhuk.
5) Fix sta object leak in mac80211, from Johannes Berg.
6) Fix regression by not configuring PHYLINK on CPU port of bcm_sf2
switches. From Florian Fainelli.
7) Revert DMA sync removal from r8169 which was causing regressions on
some MIPS Loongson platforms. From Heiner Kallweit.
8) Use after free in flow dissector, from Jakub Sitnicki.
9) Fix NULL derefs of net devices during ICMP processing across
collect_md tunnels, from Hangbin Liu.
10) proto_register() memory leaks, from Zhang Lin.
11) Set NLM_F_MULTI flag in multipart netlink messages consistently,
from John Fastabend.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (66 commits)
r8152: Set memory to all 0xFFs on failed reg reads
openvswitch: Fix conntrack cache with timeout
ipv4: mpls: fix mpls_xmit for iptunnel
nexthop: Fix nexthop_num_path for blackhole nexthops
net: rds: add service level support in rds-info
net: route dump netlink NLM_F_MULTI flag missing
s390/qeth: reject oversized SNMP requests
sock: fix potential memory leak in proto_register()
MAINTAINERS: Add phylink keyword to SFF/SFP/SFP+ MODULE SUPPORT
xfrm/xfrm_policy: fix dst dev null pointer dereference in collect_md mode
ipv4/icmp: fix rt dst dev null pointer dereference
openvswitch: Fix log message in ovs conntrack
bpf: allow narrow loads of some sk_reuseport_md fields with offset > 0
bpf: fix use after free in prog symbol exposure
bpf: fix precision tracking in presence of bpf2bpf calls
flow_dissector: Fix potential use-after-free on BPF_PROG_DETACH
Revert "r8169: remove not needed call to dma_sync_single_for_device"
ipv6: propagate ipv6_add_dev's error returns out of ipv6_find_idev
net/ncsi: Fix the payload copying for the request coming from Netlink
qed: Add cleanup in qed_slowpath_start()
...
- Fix of a memory leak (and related cleanups) in the hyper-v keyboard
driver by Dexuan Cui.
- Code cleanups for hyper-v clocksource driver during the merge window
by Dexuan Cui.
- Fix for a false positive warning in the userspace hyper-v KVP store by
Vitaly Kuznetsov.
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Merge tag 'hyperv-fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull Hyper-V fixes from Sasha Levin:
- Fix for panics and network failures on PAE guests by Dexuan Cui.
- Fix of a memory leak (and related cleanups) in the hyper-v keyboard
driver by Dexuan Cui.
- Code cleanups for hyper-v clocksource driver during the merge window
by Dexuan Cui.
- Fix for a false positive warning in the userspace hyper-v KVP store
by Vitaly Kuznetsov.
* tag 'hyperv-fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
Drivers: hv: vmbus: Fix virt_to_hvpfn() for X86_PAE
Tools: hv: kvp: eliminate 'may be used uninitialized' warning
Input: hyperv-keyboard: Use in-place iterator API in the channel callback
Drivers: hv: vmbus: Remove the unused "tsc_page" from struct hv_context
Daniel Borkmann says:
====================
pull-request: bpf 2019-08-24
The following pull-request contains BPF updates for your *net* tree.
The main changes are:
1) Fix verifier precision tracking with BPF-to-BPF calls, from Alexei.
2) Fix a use-after-free in prog symbol exposure, from Daniel.
3) Several s390x JIT fixes plus BE related fixes in BPF kselftests, from Ilya.
4) Fix memory leak by unpinning XDP umem pages in error path, from Ivan.
5) Fix a potential use-after-free on flow dissector detach, from Jakub.
6) Fix bpftool to close prog fd after showing metadata, from Quentin.
7) BPF kselftest config and TEST_PROGS_EXTENDED fixes, from Anders.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"A couple bugfixes, and mostly selftests changes"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
selftests/kvm: make platform_info_test pass on AMD
Revert "KVM: x86/mmu: Zap only the relevant pages when removing a memslot"
selftests: kvm: fix state save/load on processors without XSAVE
selftests: kvm: fix vmx_set_nested_state_test
selftests: kvm: provide common function to enable eVMCS
selftests: kvm: do not try running the VM in vmx_set_nested_state_test
KVM: x86: svm: remove redundant assignment of var new_entry
MAINTAINERS: add KVM x86 reviewers
MAINTAINERS: change list for KVM/s390
kvm: x86: skip populating logical dest map if apic is not sw enabled
test_msr_platform_info_disabled() generates EXIT_SHUTDOWN but VMCB state
is undefined after that so an attempt to launch this guest again from
test_msr_platform_info_enabled() fails. Reorder the tests to make test
pass.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
When ./test_xdp_vlan_mode_generic.sh runs it complains that it can't
find file test_xdp_vlan.sh.
# selftests: bpf: test_xdp_vlan_mode_generic.sh
# ./test_xdp_vlan_mode_generic.sh: line 9: ./test_xdp_vlan.sh: No such
file or directory
Rework so that test_xdp_vlan.sh gets installed, added to the variable
TEST_PROGS_EXTENDED.
Fixes: d35661fcf9 ("selftests/bpf: add wrapper scripts for test_xdp_vlan.sh")
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Acked-by: Jesper Dangaard Brouer <jbrouer@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
When running test_kmod.sh the following shows up
# sysctl cannot stat /proc/sys/net/core/bpf_jit_enable No such file or directory
cannot: stat_/proc/sys/net/core/bpf_jit_enable #
# sysctl cannot stat /proc/sys/net/core/bpf_jit_harden No such file or directory
cannot: stat_/proc/sys/net/core/bpf_jit_harden #
Rework to enable CONFIG_BPF_JIT to solve "No such file or directory"
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
test_btf_dump fails when run with O=, because it needs to access source
files and assumes they live in ./progs/, which is not the case in this
scenario.
Fix by instructing kselftest to copy btf_dump_test_case_*.c files to the
test directory. Since kselftest does not preserve directory structure,
adjust the test to look in ./progs/ and then in ./.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
test_cgroup_storage fails on s390 with an assertion failure: packets are
dropped when they shouldn't. The problem is that BPF_DW packet count is
accessed as BPF_W with an offset of 0, which is not correct on
big-endian machines.
Since the point of this test is not to verify narrow loads/stores,
simply use BPF_DW when working with packet counts.
Fixes: 68cfa3ac6b ("selftests/bpf: add a cgroup storage test")
Fixes: 919646d2a3 ("selftests/bpf: extend the storage test to test per-cpu cgroup storage")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
state_test and smm_test are failing on older processors that do not
have xcr0. This is because on those processor KVM does provide
support for KVM_GET/SET_XSAVE (to avoid having to rely on the older
KVM_GET/SET_FPU) but not for KVM_GET/SET_XCRS.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
When building hv_kvp_daemon GCC-8.3 complains:
hv_kvp_daemon.c: In function ‘kvp_get_ip_info.constprop’:
hv_kvp_daemon.c:812:30: warning: ‘ip_buffer’ may be used uninitialized in this function [-Wmaybe-uninitialized]
struct hv_kvp_ipaddr_value *ip_buffer;
this seems to be a false positive: we only use ip_buffer when
op == KVP_OP_GET_IP_INFO and it is only unset when op == KVP_OP_ENUMERATE.
Silence the warning by initializing ip_buffer to NULL.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Pull networking fixes from David Miller:
1) Fix jmp to 1st instruction in x64 JIT, from Alexei Starovoitov.
2) Severl kTLS fixes in mlx5 driver, from Tariq Toukan.
3) Fix severe performance regression due to lack of SKB coalescing of
fragments during local delivery, from Guillaume Nault.
4) Error path memory leak in sch_taprio, from Ivan Khoronzhuk.
5) Fix batched events in skbedit packet action, from Roman Mashak.
6) Propagate VLAN TX offload to hw_enc_features in bond and team
drivers, from Yue Haibing.
7) RXRPC local endpoint refcounting fix and read after free in
rxrpc_queue_local(), from David Howells.
8) Fix endian bug in ibmveth multicast list handling, from Thomas
Falcon.
9) Oops, make nlmsg_parse() wrap around the correct function,
__nlmsg_parse not __nla_parse(). Fix from David Ahern.
10) Memleak in sctp_scend_reset_streams(), fro Zheng Bin.
11) Fix memory leak in cxgb4, from Wenwen Wang.
12) Yet another race in AF_PACKET, from Eric Dumazet.
13) Fix false detection of retransmit failures in tipc, from Tuong
Lien.
14) Use after free in ravb_tstamp_skb, from Tho Vu.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (101 commits)
ravb: Fix use-after-free ravb_tstamp_skb
netfilter: nf_tables: map basechain priority to hardware priority
net: sched: use major priority number as hardware priority
wimax/i2400m: fix a memory leak bug
net: cavium: fix driver name
ibmvnic: Unmap DMA address of TX descriptor buffers after use
bnxt_en: Fix to include flow direction in L2 key
bnxt_en: Use correct src_fid to determine direction of the flow
bnxt_en: Suppress HWRM errors for HWRM_NVM_GET_VARIABLE command
bnxt_en: Fix handling FRAG_ERR when NVM_INSTALL_UPDATE cmd fails
bnxt_en: Improve RX doorbell sequence.
bnxt_en: Fix VNIC clearing logic for 57500 chips.
net: kalmia: fix memory leaks
cx82310_eth: fix a memory leak bug
bnx2x: Fix VF's VLAN reconfiguration in reload.
Bluetooth: Add debug setting for changing minimum encryption key size
tipc: fix false detection of retransmit failures
lan78xx: Fix memory leaks
MAINTAINERS: r8169: Update path to the driver
MAINTAINERS: PHY LIBRARY: Update files in the record
...
- A fix for the hyper-v MAINTAINERs entry from Lan Tianyu.
- Fix for SPDX license identifier in the userspace tools from Nishad
Kamdar.
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Merge tag 'hyperv-fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull Hyper-V fixes from Sasha Levin:
- A few fixes for the userspace hyper-v tools from Adrian Vladu.
- A fix for the hyper-v MAINTAINERs entry from Lan Tianyu.
- Fix for SPDX license identifier in the userspace tools from Nishad
Kamdar.
* tag 'hyperv-fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
MAINTAINERS: Fix Hyperv vIOMMU driver file name
tools: hv: Use the correct style for SPDX License Identifier
tools: hv: fix typos in toolchain
tools: hv: fix KVP and VSS daemons exit code
tools: hv: fixed Python pep8/flake8 warnings for lsvmbus
HyperV KVP and VSS daemons should exit with 0 when the '--help'
or '-h' flags are used.
Signed-off-by: Adrian Vladu <avladu@cloudbasesolutions.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Sasha Levin <sashal@kernel.org>
Cc: Alessandro Pilotti <apilotti@cloudbasesolutions.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Fixed pep8/flake8 python style code for lsvmbus tool.
The TAB indentation was on purpose ignored (pep8 rule W191) to make
sure the code is complying with the Linux code guideline.
The following command doe not show any warnings now:
pep8 --ignore=W191 lsvmbus
flake8 --ignore=W191 lsvmbus
Signed-off-by: Adrian Vladu <avladu@cloudbasesolutions.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Sasha Levin <sashal@kernel.org>
Cc: Dexuan Cui <decui@microsoft.com>
Cc: Alessandro Pilotti <apilotti@cloudbasesolutions.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
When showing metadata about a single program by invoking
"bpftool prog show PROG", the file descriptor referring to the program
is not closed before returning from the function. Let's close it.
Fixes: 71bb428fe2 ("tools: bpf: add bpftool")
Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
This patchset contains Netfilter fixes for net:
1) Extend selftest to cover flowtable with ipsec, from Florian Westphal.
2) Fix interaction of ipsec with flowtable, also from Florian.
3) User-after-free with bound set to rule that fails to load.
4) Adjust state and timeout for flows that expire.
5) Timeout update race with flows in teardown state.
6) Ensure conntrack id hash calculation use invariants as input,
from Dirk Morris.
7) Do not push flows into flowtable for TCP fin/rst packets.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
When running tcp_fastopen_backup_key.sh the following issue was seen in
a busybox environment.
./tcp_fastopen_backup_key.sh: line 33: [: -ne: unary operator expected
Shellcheck showed the following issue.
$ shellcheck tools/testing/selftests/net/tcp_fastopen_backup_key.sh
In tools/testing/selftests/net/tcp_fastopen_backup_key.sh line 33:
if [ $val -ne 0 ]; then
^-- SC2086: Double quote to prevent globbing and word splitting.
Rework to do a string comparison instead.
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
vmx_set_nested_state_test is trying to use the KVM_STATE_NESTED_EVMCS without
enabling enlightened VMCS first. Correct the outcome of the test, and actually
test that it succeeds after the capability is enabled.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
There are two tests already enabling eVMCS and a third is coming.
Add a function that enables the capability and tests the result.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This test is only covering various edge cases of the
KVM_SET_NESTED_STATE ioctl. Running the VM does not really
add anything.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
"bind4 allow specific IP & port" and "bind6 deny specific IP & port"
fail on s390 because of endianness issue: the 4 IP address bytes are
loaded as a word and compared with a constant, but the value of this
constant should be different on big- and little- endian machines, which
is not the case right now.
Use __bpf_constant_ntohl to generate proper value based on machine
endianness.
Fixes: 1d436885b2 ("selftests/bpf: Selftest for sys_bind post-hooks.")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Daniel Borkmann says:
====================
pull-request: bpf 2019-08-11
The following pull-request contains BPF updates for your *net* tree.
The main changes are:
1) x64 JIT code generation fix for backward-jumps to 1st insn, from Alexei.
2) Fix buggy multi-closing of BTF file descriptor in libbpf, from Andrii.
3) Fix libbpf_num_possible_cpus() to make it thread safe, from Takshak.
4) Fix bpftool to dump an error if pinning fails, from Jakub.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull perf tooling fixes from Thomas Gleixner:
"Perf tooling fixes all over the place:
- Fix the selection of the main thread COMM in db-export
- Fix the disassemmbly display for BPF in annotate
- Fix cpumap mask setup in perf ftrace when only one CPU is present
- Add the missing 'cpu_clk_unhalted.core' event
- Fix CPU 0 bindings in NUMA benchmarks
- Fix the module size calculations for s390
- Handle the gap between kernel end and module start on s390
correctly
- Build and typo fixes"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf pmu-events: Fix missing "cpu_clk_unhalted.core" event
perf annotate: Fix s390 gap between kernel end and module start
perf record: Fix module size on s390
perf tools: Fix include paths in ui directory
perf tools: Fix a typo in a variable name in the Documentation Makefile
perf cpumap: Fix writing to illegal memory in handling cpumap mask
perf ftrace: Fix failure to set cpumask when only one cpu is present
perf db-export: Fix thread__exec_comm()
perf annotate: Fix printing of unaugmented disassembled instructions from BPF
perf bench numa: Fix cpu0 binding
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"Bugfixes (arm and x86) and cleanups"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
selftests: kvm: Adding config fragments
KVM: selftests: Update gitignore file for latest changes
kvm: remove unnecessary PageReserved check
KVM: arm/arm64: vgic: Reevaluate level sensitive interrupts on enable
KVM: arm: Don't write junk to CP15 registers on reset
KVM: arm64: Don't write junk to sysregs on reset
KVM: arm/arm64: Sync ICH_VMCR_EL2 back when about to block
x86: kvm: remove useless calls to kvm_para_available
KVM: no need to check return value of debugfs_create functions
KVM: remove kvm_arch_has_vcpu_debugfs()
KVM: Fix leak vCPU's VMCS value into other pCPU
KVM: Check preempted_in_kernel for involuntary preemption
KVM: LAPIC: Don't need to wakeup vCPU twice afer timer fire
arm64: KVM: hyp: debug-sr: Mark expected switch fall-through
KVM: arm64: Update kvm_arm_exception_class and esr_class_str for new EC
KVM: arm: vgic-v3: Mark expected switch fall-through
arm64: KVM: regmap: Fix unexpected switch fall-through
KVM: arm/arm64: Introduce kvm_pmu_vcpu_init() to setup PMU counter index
Pull in updates in BPF helper function description.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
No error message is currently printed if the pin syscall
itself fails. It got lost in the loadall refactoring.
Fixes: 77380998d9 ("bpftool: add loadall command")
Reported-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Change an error message to work for any object being
pinned not just programs.
Fixes: 71bb428fe2 ("tools: bpf: add bpftool")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
selftests kvm test cases need pre-required kernel configs for the test
to get pass.
Signed-off-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The kvm_create_max_vcpus test has been moved to the main directory,
and sync_regs_test is now available on s390x, too.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Update TDC tests with cases varifying ability of TC to install or delete
batches of skbedit actions.
Signed-off-by: Roman Mashak <mrv@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The events defined in pmu-events JSON are parsed and added into perf
tool. For fixed counters, we handle the encodings between JSON and perf
by using a static array fixed[].
But the fixed[] has missed an important event "cpu_clk_unhalted.core".
For example, on the Tremont platform,
[root@localhost ~]# perf stat -e cpu_clk_unhalted.core -a
event syntax error: 'cpu_clk_unhalted.core'
\___ parser error
With this patch, the event cpu_clk_unhalted.core can be parsed.
[root@localhost perf]# ./perf stat -e cpu_clk_unhalted.core -a -vvv
------------------------------------------------------------
perf_event_attr:
type 4
size 112
config 0x3c
sample_type IDENTIFIER
read_format TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING
disabled 1
inherit 1
exclude_guest 1
------------------------------------------------------------
...
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190729072755.2166-1-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
During execution of command 'perf top' the error message:
Not enough memory for annotating '__irf_end' symbol!)
is emitted from this call sequence:
__cmd_top
perf_top__mmap_read
perf_top__mmap_read_idx
perf_event__process_sample
hist_entry_iter__add
hist_iter__top_callback
perf_top__record_precise_ip
hist_entry__inc_addr_samples
symbol__inc_addr_samples
symbol__get_annotation
symbol__alloc_hist
In this function the size of symbol __irf_end is calculated. The size of
a symbol is the difference between its start and end address.
When the symbol was read the first time, its start and end was set to:
symbol__new: __irf_end 0xe954d0-0xe954d0
which is correct and maps with /proc/kallsyms:
root@s8360046:~/linux-4.15.0/tools/perf# fgrep _irf_end /proc/kallsyms
0000000000e954d0 t __irf_end
root@s8360046:~/linux-4.15.0/tools/perf#
In function symbol__alloc_hist() the end of symbol __irf_end is
symbol__alloc_hist sym:__irf_end start:0xe954d0 end:0x3ff80045a8
which is identical with the first module entry in /proc/kallsyms
This results in a symbol size of __irf_req for histogram analyses of
70334140059072 bytes and a malloc() for this requested size fails.
The root cause of this is function
__dso__load_kallsyms()
+-> symbols__fixup_end()
Function symbols__fixup_end() enlarges the last symbol in the kallsyms
map:
# fgrep __irf_end /proc/kallsyms
0000000000e954d0 t __irf_end
#
to the start address of the first module:
# cat /proc/kallsyms | sort | egrep ' [tT] '
....
0000000000e952d0 T __security_initcall_end
0000000000e954d0 T __initramfs_size
0000000000e954d0 t __irf_end
000003ff800045a8 T fc_get_event_number [scsi_transport_fc]
000003ff800045d0 t store_fc_vport_disable [scsi_transport_fc]
000003ff800046a8 T scsi_is_fc_rport [scsi_transport_fc]
000003ff800046d0 t fc_target_setup [scsi_transport_fc]
On s390 the kernel is located around memory address 0x200, 0x10000 or
0x100000, depending on linux version. Modules however start some- where
around 0x3ff xxxx xxxx.
This is different than x86 and produces a large gap for which histogram
allocation fails.
Fix this by detecting the kernel's last symbol and do no adjustment for
it. Introduce a weak function and handle s390 specifics.
Reported-by: Klaus Theurich <klaus.theurich@de.ibm.com>
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Hendrik Brueckner <brueckner@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/20190724122703.3996-2-tmricht@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
On s390 the modules loaded in memory have the text segment located after
the GOT and Relocation table. This can be seen with this output:
[root@m35lp76 perf]# fgrep qeth /proc/modules
qeth 151552 1 qeth_l2, Live 0x000003ff800b2000
...
[root@m35lp76 perf]# cat /sys/module/qeth/sections/.text
0x000003ff800b3990
[root@m35lp76 perf]#
There is an offset of 0x1990 bytes. The size of the qeth module is
151552 bytes (0x25000 in hex).
The location of the GOT/relocation table at the beginning of a module is
unique to s390.
commit 203d8a4aa6 ("perf s390: Fix 'start' address of module's map")
adjusts the start address of a module in the map structures, but does
not adjust the size of the modules. This leads to overlapping of module
maps as this example shows:
[root@m35lp76 perf] # ./perf report -D
0 0 0xfb0 [0xa0]: PERF_RECORD_MMAP -1/0: [0x3ff800b3990(0x25000)
@ 0]: x /lib/modules/.../qeth.ko.xz
0 0 0x1050 [0xb0]: PERF_RECORD_MMAP -1/0: [0x3ff800d85a0(0x8000)
@ 0]: x /lib/modules/.../ip6_tables.ko.xz
The module qeth.ko has an adjusted start address modified to b3990, but
its size is unchanged and the module ends at 0x3ff800d8990. This end
address overlaps with the next modules start address of 0x3ff800d85a0.
When the size of the leading GOT/Relocation table stored in the
beginning of the text segment (0x1990 bytes) is subtracted from module
qeth end address, there are no overlaps anymore:
0x3ff800d8990 - 0x1990 = 0x0x3ff800d7000
which is the same as
0x3ff800b2000 + 0x25000 = 0x0x3ff800d7000.
To fix this issue, also adjust the modules size in function
arch__fix_module_text_start(). Add another function parameter named size
and reduce the size of the module when the text segment start address is
changed.
Output after:
0 0 0xfb0 [0xa0]: PERF_RECORD_MMAP -1/0: [0x3ff800b3990(0x23670)
@ 0]: x /lib/modules/.../qeth.ko.xz
0 0 0x1050 [0xb0]: PERF_RECORD_MMAP -1/0: [0x3ff800d85a0(0x7a60)
@ 0]: x /lib/modules/.../ip6_tables.ko.xz
Reported-by: Stefan Liebler <stli@linux.ibm.com>
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Hendrik Brueckner <brueckner@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: stable@vger.kernel.org
Fixes: 203d8a4aa6 ("perf s390: Fix 'start' address of module's map")
Link: http://lkml.kernel.org/r/20190724122703.3996-1-tmricht@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
These paths point to the wrong location but still work because they get
picked up by a -I flag that happens to direct to the correct file. Fix
paths to point to the correct location without -I flags.
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/20190731225441.233800-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This patch fix a spelling typo in a variable name in the Documentation Makefile.
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190801032812.25018-1-standby24x7@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
cpu_map__snprint_mask() would write to illegal memory pointed by
zalloc(0) when there is only one cpu.
This patch fixes the calculation and adds sanity check against the input
parameters.
Signed-off-by: He Zhe <zhe.he@windriver.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Fixes: 4400ac8a9a ("perf cpumap: Introduce cpu_map__snprint_mask()")
Link: http://lkml.kernel.org/r/1564734592-15624-2-git-send-email-zhe.he@windriver.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
The buffer containing the string used to set cpumask is overwritten at
the end of the string later in cpu_map__snprint_mask due to not enough
memory space, when there is only one cpu.
And thus causes the following failure:
$ perf ftrace ls
failed to reset ftrace
$
This patch fixes the calculation of the cpumask string size.
Signed-off-by: He Zhe <zhe.he@windriver.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Fixes: dc23103278 ("perf ftrace: Add support for -a and -C option")
Link: http://lkml.kernel.org/r/1564734592-15624-1-git-send-email-zhe.he@windriver.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
The code to disassemble BPF programs uses binutil's disassembling
routines, and those use in turn fprintf to print to a memstream FILE,
adding a newline at the end of each line, which ends up confusing the
TUI routines called from:
annotate_browser__write()
annotate_line__write()
annotate_browser__printf()
ui_browser__vprintf()
SLsmg_vprintf()
The SLsmg_vprintf() function in the slang library gets confused with the
terminating newline, so make the disasm_line__parse() function that
parses the lines produced by the BPF specific disassembler (that uses
binutil's libopcodes) and the lines produced by the objdump based
disassembler used for everything else (and that doesn't adds this
terminating newline) trim the end of the line in addition of the
beginning.
This way when disasm_line->ops.raw, i.e. for instructions without a
special scnprintf() method, we'll not have that \n getting in the way of
filling the screen right after the instruction with spaces to avoid
leaving what was on the screen before and thus garbling the annotation
screen, breaking scrolling, etc.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Song Liu <songliubraving@fb.com>
Fixes: 6987561c9e ("perf annotate: Enable annotation of BPF programs")
Link: https://lkml.kernel.org/n/tip-unbr5a5efakobfr6rhxq99ta@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Pull networking fixes from David Miller:
"Yeah I should have sent a pull request last week, so there is a lot
more here than usual:
1) Fix memory leak in ebtables compat code, from Wenwen Wang.
2) Several kTLS bug fixes from Jakub Kicinski (circular close on
disconnect etc.)
3) Force slave speed check on link state recovery in bonding 802.3ad
mode, from Thomas Falcon.
4) Clear RX descriptor bits before assigning buffers to them in
stmmac, from Jose Abreu.
5) Several missing of_node_put() calls, mostly wrt. for_each_*() OF
loops, from Nishka Dasgupta.
6) Double kfree_skb() in peak_usb can driver, from Stephane Grosjean.
7) Need to hold sock across skb->destructor invocation, from Cong
Wang.
8) IP header length needs to be validated in ipip tunnel xmit, from
Haishuang Yan.
9) Use after free in ip6 tunnel driver, also from Haishuang Yan.
10) Do not use MSI interrupts on r8169 chips before RTL8168d, from
Heiner Kallweit.
11) Upon bridge device init failure, we need to delete the local fdb.
From Nikolay Aleksandrov.
12) Handle erros from of_get_mac_address() properly in stmmac, from
Martin Blumenstingl.
13) Handle concurrent rename vs. dump in netfilter ipset, from Jozsef
Kadlecsik.
14) Setting NETIF_F_LLTX on mac80211 causes complete breakage with
some devices, so revert. From Johannes Berg.
15) Fix deadlock in rxrpc, from David Howells.
16) Fix Kconfig deps of enetc driver, we must have PHYLIB. From Yue
Haibing.
17) Fix mvpp2 crash on module removal, from Matteo Croce.
18) Fix race in genphy_update_link, from Heiner Kallweit.
19) bpf_xdp_adjust_head() stopped working with generic XDP when we
fixes generic XDP to support stacked devices properly, fix from
Jesper Dangaard Brouer.
20) Unbalanced RCU locking in rt6_update_exception_stamp_rt(), from
David Ahern.
21) Several memory leaks in new sja1105 driver, from Vladimir Oltean"
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (214 commits)
net: dsa: sja1105: Fix memory leak on meta state machine error path
net: dsa: sja1105: Fix memory leak on meta state machine normal path
net: dsa: sja1105: Really fix panic on unregistering PTP clock
net: dsa: sja1105: Use the LOCKEDS bit for SJA1105 E/T as well
net: dsa: sja1105: Fix broken learning with vlan_filtering disabled
net: dsa: qca8k: Add of_node_put() in qca8k_setup_mdio_bus()
net: sched: sample: allow accessing psample_group with rtnl
net: sched: police: allow accessing police->params with rtnl
net: hisilicon: Fix dma_map_single failed on arm64
net: hisilicon: fix hip04-xmit never return TX_BUSY
net: hisilicon: make hip04_tx_reclaim non-reentrant
tc-testing: updated vlan action tests with batch create/delete
net sched: update vlan action for batched events operations
net: stmmac: tc: Do not return a fragment entry
net: stmmac: Fix issues when number of Queues >= 4
net: stmmac: xgmac: Fix XGMAC selftests
be2net: disable bh with spin_lock in be_process_mcc
net: cxgb3_main: Fix a resource leak in a error path in 'init_one()'
net: ethernet: sun4i-emac: Support phy-handle property for finding PHYs
net: bridge: move default pvid init/deinit to NETDEV_REGISTER/UNREGISTER
...
Update TDC tests with cases varifying ability of TC to install or delete
batches of vlan actions.
Signed-off-by: Roman Mashak <mrv@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Make sure that shutdown never works, and at the same time document how
I tested to came to the conclusion that currently reuse is not possible.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This Kselftest update for Linux 5.3-rc4 consists of fix to Kselftest
framework to save and restore errno and a fix to livepatch to push
and pop dynamic debug config.
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Merge tag 'linux-kselftest-5.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest fixes from Shuah Khan:
"A fix to the Kselftest framework to save and restore errno and a fix
to livepatch to push and pop dynamic debug config"
* tag 'linux-kselftest-5.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests/livepatch: push and pop dynamic debug config
kselftest: save-and-restore errno to allow for %m formatting
Given the increasing number of BPF selftests, it makes sense to
reduce the time to execute these tests. The ping parameters are
adjusted to reduce the time from measures 9 sec to approx 2.8 sec.
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In-order to test both native-XDP (xdpdrv) and generic-XDP (xdpgeneric)
create two wrapper test scripts, that start the test_xdp_vlan.sh script
with these modes.
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Change BPF selftest test_xdp_vlan.sh to (default) use generic XDP.
This selftest was created together with a fix for generic XDP, in commit
2972495699 ("net: fix generic XDP to handle if eth header was
mangled"). And was suppose to catch if generic XDP was broken again.
The tests are using veth and assumed that veth driver didn't support
native driver XDP, thus it used the (ip link set) 'xdp' attach that fell
back to generic-XDP. But veth gained native-XDP support in 948d4f214f
("veth: Add driver XDP"), which caused this test script to use
native-XDP.
Fixes: 948d4f214f ("veth: Add driver XDP")
Fixes: 97396ff0bc ("selftests/bpf: add XDP selftests for modifying and popping VLAN headers")
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
'flow offload' expression should not offload flows that will be subject
to ipsec, but it does.
This results in a connectivity blackhole for the affected flows -- first
packets will go through (offload happens after established state is
reached), but all remaining ones bypass ipsec encryption and are thus
discarded by the peer.
This can be worked around by adding "rt ipsec exists accept"
before the 'flow offload' rule matches.
This test case will fail, support for such flows is added in
next patch.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Linus Torvalds